Phase junction CdS: High efficient and stable photocatalyst for hydrogen generation

Ai, Zizheng; Zhao, Gang; Zhong, Yueyao; Shao, Yongliang; Huang, Baibiao; Wu, Yongzhong; Hao, Xiaopeng

doi:10.1016/j.apcatb.2017.09.002

Cited by 130 publications

(71 citation statements)

References 37 publications

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“…The measured lattice fringes of 0.336, 0.317 and 0.358 nm match that of the (0 0 2), (1 0 1), and (1 0 0) crystal planes of the hexagonal CdS (Fig. 1c) [45]. The energy dispersive X-ray (EDX) elemental mapping of 20%CdS-CTF-1 revealed the coexistence of C, N, Cd and S, confirmation of the uniform distribution of CdS nanoparticles on the surface of CTF-1 (Fig.…”

Section: Resultssupporting

confidence: 65%

Highly efficient charge transfer in CdS-covalent organic framework nanocomposites for stable photocatalytic hydrogen evolution under visible light

et al. 2020

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Section: Resultssupporting

confidence: 65%

Highly efficient charge transfer in CdS-covalent organic framework nanocomposites for stable photocatalytic hydrogen evolution under visible light

et al. 2020

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“…Hence, the development of efficient techniques allowing the photodegradation of dyes to non-toxic components has become of great importance. Numerous photocatalysts have been taken into account, including oxides [5][6][7], sulfides [8][9][10] and nitrides [11]. Nevertheless, the efficient utilization of visible light remains a serious challenge.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of anisotropic Cu2−xS-based nanostructures by thermal oxidation

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et al. 2019

J Therm Anal Calorim

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Flower-like copper sulfides nanostructures were synthesized via the solvothermal route. The structural, optical and electrochemical properties of the synthesized materials were characterized by means of X-ray diffraction (XRD), scanning electron microscopy, ultraviolet-visible spectrometry and Fourier transform infrared spectroscopy (FTIR). Thermal behavior of the obtained flower-like materials was analyzed by TG, XRD and FTIR in situ measurements, over the temperature range of 25-800°C. It was found that both shape and phase composition remain stable until the temperature reaches 200°C. Phase transformation mechanism was discussed. During annealing, mixture of CuS and Cu 1.8 S is converted to copper sulfide hydroxides (200-500°C) and further to CuO (700°C and higher). Nevertheless, hierarchically porous structure is stable only to 200°C. Applying higher temperatures affects the solubility of the material and inflicts structural damage, resulting in the formation of dense oval particles with size of 20 to 200 nm.

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“…Moreover, the absorption intensities ranging from 450 to 800 nm gradually strengthened with increase of the mass ratio of Ti 4 O 7 (m): g-C 3 N 4 (m), indicating that the Ti 4 O 7 /g-C 3 N 4 heterojunction with good interaction between Ti 4 O 7 and g-C 3 N 4 facilitated the enhancement of visible-light harvesting (Chang et al, 2018 ). The band gap of Ti 4 O 7 /g-C 3 N 4 was determined such that (Ai et al, 2018 ):

where α is the optical absorption coefficient; h is the Plank's constant; ν is the photonic frequency; A is the proportionality constant; E g is the band gap.…”

Section: Resultsmentioning

confidence: 99%

Ti4O7/g-C3N4 for Visible Light Photocatalytic Oxidation of Hypophosphite: Effect of Mass Ratio of Ti4O7/g-C3N4

et al. 2018

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Hypophosphite wastewater treatment is still a critical issue in metallurgical processes and the oxidation of hypophosphite to phosphate followed by the precipitation of phosphate is an important strategy for hypophosphite wastewater treatment. Herein, Ti4O7/g-C3N4 photocatalysts with various mass ratios (Ti4O7 (m): g-C3N4 (m) = 0.5, 0.2, 0.1, and 0.05) were synthesized by a hydrolysis method and the effect of the mass ratio of Ti4O7 (m): g-C3N4 (m) on Ti4O7/g-C3N4 visible light photocatalytic oxidation of hypophosphite was evaluated. The as-prepared Ti4O7/g-C3N4 were characterized and confirmed by SEM, XPS, XRD and FTIR. Moreover, the specific surface area and the distribution of pore size of Ti4O7/g-C3N4 was also analyzed. Our results showed that Ti4O7/g-C3N4 exhibited remarkably improved photocatalytic performance on hypophosphite oxidation compared with g-C3N4 and meanwhile 1:2-Ti4O7/g-C3N4 with a mass ratio of 0.5 showed the best photocatalytic performance with the highest oxidation rate constant (17.7-fold and 91.0-fold higher than that of pure g-C3N4 and Ti4O7, respectively). The enhanced performance of photocatalytic oxidation of hypophosphite was ascribed to the heterojunction structure of Ti4O7/g-C3N4 with broader light absorption and significantly enhanced efficiency of the charge carrier (e−-h+) generation and separation. Additionally, the generated ·OH and ·O2- radicals contributed to the hypophosphite oxidation during the photocatalytic system.

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Phase junction CdS: High efficient and stable photocatalyst for hydrogen generation

Cited by 130 publications

References 37 publications

Highly efficient charge transfer in CdS-covalent organic framework nanocomposites for stable photocatalytic hydrogen evolution under visible light

Highly efficient charge transfer in CdS-covalent organic framework nanocomposites for stable photocatalytic hydrogen evolution under visible light

Synthesis of anisotropic Cu2−xS-based nanostructures by thermal oxidation

Ti4O7/g-C3N4 for Visible Light Photocatalytic Oxidation of Hypophosphite: Effect of Mass Ratio of Ti4O7/g-C3N4

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